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Test Code 0966 Estimated Glomerular Filtration Rate (eGFR)

Performing Laboratory

Barnes-Jewish Hospital Laboratory



Note: The laboratory’s creatinine method has been calibrated to be traceable to an isotope dilution mass spectrometry (IDMS).

Literature Reference:

CKD-EPI study equation recommended by National Kidney Foundation. (KDIGO 2012 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease.  Kidney Intnl Suppl Jan 2013; 3:1). 

Specimen Requirements

Must be ordered concurrently with #1887 Creatinine, Plasma. Creatinine is available as part of #1851 Basic Metabolic Panel (BMP), #6961 Comprehensive Metabolic Panel (CMP), and #6970 Renal Function Panel.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory

Reference Values

≥90 mL/min/1.73m2     

Test Classification and CPT Coding

Not applicable

Additional Information

For BJH Laboratory Use Only
Laboratory Processing Instructions:

Test performed in BJH Core Lab.  eGFR  must have accompanying creatinine. Specimen collection times must be within no more than 5 minutes of each other. eGFR may not be added onto completed testing. If eGFR is needed for a patient with a completed creatinine, call Core Lab to request calculation using LUO eGFR. Centrifuge upon receipt. Deliver to the Modular workstation in North Campus Laboratory. Processed by 8100 automated line in Core Lab for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days.

LOINC Code Information

Name LOINC Code
Glomerular filtration rate predicted 48642-3